Seiko Cal. 5630 - 450

Seiko 5630-450

The Seiko 5630-450 represents an important milestone in Seiko's 1983 lineup. Powered by the 5630 caliber with 28j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-e8b841e67119]

Also known as: Sumo, Arnie

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Champagne
Jewels
28j
Frequency
36,000 bph
Power Reserve
39 hours
Year
1983

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